Improvement in car-heaters



8- Sheets-Shee't 1.

H. MpMCINTIRE.

\ Car-Heater. y No. 214,575. Patented -Aprilv 22,1879.

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Uurrnn STATES PATENT' OFFICE.

HENRY M. MCINTIRE, 0F EASTON, PENNSYLVANIA.

IMPROVEMENT IN .cAR-HEATERS."

Specification forming part of Leiters Patent N0. 214,575, dated April22, 1879; application filed July 20, 1877.

To all lwhom it may concern:

Be it known that I, HENRY MAHN MOIN- TIRVE, M. E., of Easton, in thecounty of Northampton. and State of Pennsylvania, have invented incar-heaters a new means for automatically cutting off the supply offluid fuel to the Vburner or furnace in case of accident to the car,which isfully set forth in the following specification and accompanyingdrawings, the explanation of which and referencelctters are as follows:

EXPLANATION OF PLATES.

y Figure 1, Plate I, sectional elevation of car, showing boiler, tre.,cylinders, and system of pipes; Fig. 2, sectional plan through w,showing boiler, the., cylinders, and system of pipes; Fig. 3, Plate II,elevation, in section, of boiler and furnace; Fig. 4, plan, in section,throughl y y, of boiler and furnace; Fig. 5, Plate III, vertical, andFig. 6 horizontal, projections of the gravity-cock Fig. 7, verticalprojection of hot-water heater or boiler.

The references are as follows: A A', Figs.`

1, 2, 7, boiler; B B', Figs. 1, 2, 3, 7, steam or hot-water pipe; C G',Figs. 1, 2, 3, 7, steam or hot-water pipe; D E D' E', Figs. 1, 2, 3,gaspipe; FF', Figs.1,2, gas-cylinders; GG',Figs. 1, 2, gas-regulator; HH', Figs. 1, 2, gravitycock; I, Figs. 1, 3, 7, outside casing of furnace5 J, Fig. 3, chamber for mixing gas with air; K, Fig. 3, holes foradmitting air to be mixed with gas; L, Figs. 3, 4, tubes for conductinggas and air to be burned; M, Fig. 3, holes for admitting air to supplycombustion; N, Figs. 3, 4, hre-bridge; O, Fig. 3, llame; P, Figs. 3, 4,chamber; Q, Figs. 3, 4, tubes or flues; It, Figs. 1, 3, 7 stack; S andT, Fig.3, safety-valve 'and gage-cocks, U and U', Figs. 5, 6, valve andvalve-seat; V, Fig. 5, handle of valve; NV X Y Z, weighted lever.

The object of my invention is to furnish an apparatus for heating cars,so arranged that in case of an accident like the rolling of the car downan embankment the fires will be eX- tinguished.

"lhefuel is gas, and the vehicle or agent for distributing the heatvthroughout the body of the car is either hot water or steam, employedin the usual method of using water or steam for heating purposes, beingemployed to a great extent at present for heating cars. Ihe gas isstored under pressure in metallic flasks or cylinders' placed under thecar, while the apparatus is rendered safe by having in the pipeconnecting the storage flasks or cylinders with the furnace, (forheating the water or generating steam,) somewhere before reaching thefurnace, what might be called a gravity-coek7-that is, a cock soconnected with -a suspended weight that when the car is tilted beyond acertain angle, (as in rolling down au embankment,) the weight, tendingto be kept by gravity in a perpendicular position, closes the cock, thegas is extinguished wherever it is burning, `and any possibility of theflames boiler-the one for steam, the other for hot water. The one forsteam is shown at A and A upon Figs. 1 and 2, Plate I, and indetail uponFigs. 3 and 4, Plate II. The furnace is seen at I, Fig. 1,-iu the lowerpart of Fig. 3, and in the centerof Fig. 4. D, in Figs. l, 2, and 3, isthe gas-pipe, leading from the iiasks or cylinders F, Figs. l and 2. Itopens into the chamber J, Fig. 3, where the gas mixes with air, enteringthrough the holes K K KK,F1g. 3 5 thence it passes up through the tubesmarked L, Figs. 3 and 4, and burns vabove them, air being supplied forthe combustion through the holes M M M M, Fig. 3. rlhe part sectionlined and marked N, Figs. 3 and 4, is of firebrick, and serves tocollect the iiame, causing it to pass up into O, Fig. 3, thence turn`down to P, Figs. 3 and 4, and pass through the iues Q, Figs. 3 and 4,and up the stack It, Figs. 1 and 3. The steam is generated and passesout the pipe B, Figs. 1, 2, and 3, then passes through the car accordingto the common method now in use, as shown upon Plate I. Beingcondensed,lit enters the boiler A' at B', Fig. 2, while the steam fromA', returning through C', Fig. 2, enters A at C, Figs. 1, 2,

and 3. The boiler is tted with asaiety-valve at S, Fig. 3, gage-cocks atT, Fig. 3, and au injector. (Not shown.)

In the case of the boiler for hot-water heating shown on Fig. 7, PlateIII, it is the same as the one just described, except that it has nosafety-valve, gage-cocks, or injector. Its position in the car would bethe same as that shown at A, Fig. 2; but upon Fig. l the whole boilerwould be within the car, and not half in and half out, as that shownthere, and the arrangement of the pipes would be the same.

The gas-furnace above described is one often used where gas is used as afuel.

II. The gwwitg/-cocu-Before the gas-pipe D, Figs. l, 2, and 3, passes tothe furnace, it connects with the safety gravity-cock. (Shown at H andH', Fig. 2, and in detail upon Figs. 5 and 6, Plate III.) It is nothingmore nor less than a common hand-cock, such as is used universally ingas and water fitting. (Indicated byU and U', Figs. 5 and 6, and thehandle by V, Fig. 5.) Below this, and encircling it partway, is ahorn-shaped piece, YV WV, swinging upon the axles T', the whole beingkept in a perpendicular position by the weight X. Now, if the car shouldroll over or upon its side, the weight X would, of course, under theaction of gravity, tend to keep at the lowest point possible, and sowould assume such a position as that indicated by the small broken line,and marked X. In attainingthis position it would push the handle V tothe posit-ion V', which, as shown by the broken lines and dotted linesat U, would close the cock, while if the weight should endeavor toassume the rstposition, X, it could do so without altering the cock, asmay be seen from the dotted and broken line Y Y', which indicates thepath of the most exterior points Z of the part V.

By reference to the drawings it will be seen that there is left a littlespace or play between the parts WV W and the handle V. This is to allowfor any oscillation that may occur of the weight X by the motion of thecar. The weight X must be heavy and suspended at a short distance fromthe axis W', in preference to a light weight and a greater distance fromthe point of suspension. The movement might be the same in each case;but with a heavy weight and short arm the swinging caused by the motionof the car would be a greatdeal less than with a lighter weight andlonger arm.

III. The reservoirs offuel.-As before mentioned, the gas is stored inlarge cylinders underneath the car, F F F F' F' F', Figs. l and 2. Theseare the same as those commonly used for storing gas at present. Theyconnect with the gas-pipes D E D' E', Figs. l and 2. In these pipes, atsome point, as G G', Figs. l and 2, must be placed regulators to keepthe flow of the gas constant under the decreasing pressure. As the openspace under a car 1s very great, a large number of these cylinders may,if necessary, be placed; and as the dc.- gree of compression of a gasis, for all practical purposes, limited only by the strength of thecylinders, the amount of gas that can then be stored up is almostunlimited, so that gas can bepumpcd into the cylinders, while the ear isin the car-house, enough to last for a trip, after which, if needed, itmay be replenished.

This, then, is vthe new and improved carheating apparatus, and means forautomatically cutting oif the supply of luid fuel to the burner, so thatit extinguishes the fires in case of an accident like the rolling of acar down an embankment. The method for steam and that for water arealmost identical. The boil/- ers are almost the same; could be so, infact, except for convenience.

A pipe taken from the gas-pipe after it has passed the gravity-cock, andconnecting with burners, would serve to make the illumination safe also.

The actual methods of construction are accordin g to the simple andeveryday-used methlods of any steam and gas fitter.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The gravity-cock shown and described, for automatically cutting off thesupply of gaseous fuel to the burner, as set forth.

HENRY M. MCINTIRE.

Iitnessesz CHARLES Mo INTIRE, (l1-mums MoINriRE, Jr.

